Site

State

PM AQI* (ug/m3)

Omak-Colville Tribe

WA

17

La Pine Rural Fire Dept

OR

14

Burns - Washington St.

OR

12

Clarkston-13th St

WA

10

Wenatchee-Fifth St

WA

10

Winthrop-Chewuch Rd

WA

9

Twisp-Glover St

WA

9

John Day Dayton St

OR

9

Port Angeles-E 5th St

WA

8

Bend - Pump Station

OR

8